Question

a body have large momentum ?​

Answer 1

Explanation:

Answer

Kinetic energy ,

k=

2

1

my

2

=

2m

(mv)

2

=

2m

p

2

or p=

2mk

i.e., p∝=

m

Thus the heavier body has a greater momentum than the lighter one.

Answer 2

Answer:

Let the mass of the light body = m kg , its velocity = v m/s.

Let the mass of the heavy body = M kg, M > m , its velocity V m/s.

KE = (mv)²/ (2m) = (MV)²/(2M )

(mv)²/(MV)² = m/M < 1 => mv < MV

The heavier body has higher momentum.

===================================

2) lighter body: m kg and velocity V m/s

heavier body : 2 m and velocity V/2 m/s

Their momentum is same.

But KE : 1/2 m V² : 1/2 (2m) (V/2)²

KE : 1 : 1/2

The lighter body has a higher KE

I hope you understand it.